摘要
根据断裂力学理论和结构系统可靠性分析原理,推导出交变应力引起的悬索桥吊索系统疲劳失效的计算公式,从而提出的一种考虑构件腐蚀后吊索系统安全寿命的评估方法,可以为公路管理部门合理安排桥梁的检测、维修、加固的时机和投资提供依据。
Based on the theory of fracture mechanics and the principle of structural reliability analysis, a computation formula of the fatigue failure of suspension cable system in a suspension bridge caused by alternate stress is deduced, thus an evaluation method on the safety life of suspen- sion cable system which has been subjected to eroding is suggested, according to which, highway ad- ministration departments can arrange the opportunity of detection, maintenance and strengthening of bridges, as well as the investment.
出处
《交通标准化》
2009年第3期57-60,共4页
Communications Standardization
关键词
吊索体系
模糊可靠度
疲劳失效
安全寿命
suspension cable system
fuzzy reliability
fatigue failure
safety life
